I am using Arduino IDE 1.8.5 with Windows 10. I can't get the sketch to upload to the ESP32 board.

I have the following selected:- ESP32 Dev Module- Upload Speed 921600

The port option is grayed out and I can't select the port to use. When I try to upload, I get:"Failed to execute script esptool the selected serial port Failed to execute script esptool does not exist or your board is not connected"

I have the ESP32 board connected with the USB cable, not COM1.Any suggestions?